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Title: Quantitative Characterization of the Nanoscale Local Lattice Strain Induced by Sr Dopants in La 1.92 Sr 0.08 CuO 4

Abstract

Here, the nanometer scale lattice deformation brought about by the dopants in the high temperature superconducting cuprate La 2-xSr xCuO 4 (x = 0.08) was investigated by measuring the associated x-ray diffuse scattering around multiple Bragg peaks. A characteristic diffuse scattering pattern was observed, which can be well described by continuum elastic theory. With the fitted dipole force parameters, the acoustic-type lattice deformation pattern was reconstructed and found to be of similar size to lattice thermal vibration at 7 K. Our results address the long-term concern of dopant introduced local lattice inhomogeneity, and show that the associated nanometer scale lattice deformation is marginal and cannot, alone, be responsible for the patched variation in the spectral gaps observed with scanning tunneling microscopy in the cuprates.

Authors:
 [1];  [2];  [3];  [4];  [5];  [6];  [7]
  1. Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Chinese Academy of Science, Beijing (China)
  2. Chinese Academy of Sciences (CAS), Beijing (China); ShanghaiTech Univ., Shanghai (China); Collaborative Innovation Center of Quantum Matter, Beijing (China)
  3. Univ. of Birmingham, Birmingham (United Kingdom)
  4. Japan Atomic Energy Agency, Ibaraki (Japan)
  5. Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Chinese Academy of Science, Beijing (China); Collaborative Innovation Center of Quantum Matter, Beijing (China)
  6. Argonne National Lab. (ANL), Argonne, IL (United States)
  7. Univ. of California, San Diego, La Jolla, CA (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1461419
Alternate Identifier(s):
OSTI ID: 1436900
Grant/Contract Number:  
AC02-06CH11357; SC0003678
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 120; Journal Issue: 19; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Lin, J. Q., Liu, X., Blackburn, E., Wakimoto, S., Ding, H., Islam, Z., and Sinha, S. K. Quantitative Characterization of the Nanoscale Local Lattice Strain Induced by Sr Dopants in La1.92Sr0.08CuO4. United States: N. p., 2018. Web. doi:10.1103/PhysRevLett.120.197001.
Lin, J. Q., Liu, X., Blackburn, E., Wakimoto, S., Ding, H., Islam, Z., & Sinha, S. K. Quantitative Characterization of the Nanoscale Local Lattice Strain Induced by Sr Dopants in La1.92Sr0.08CuO4. United States. doi:10.1103/PhysRevLett.120.197001.
Lin, J. Q., Liu, X., Blackburn, E., Wakimoto, S., Ding, H., Islam, Z., and Sinha, S. K. Fri . "Quantitative Characterization of the Nanoscale Local Lattice Strain Induced by Sr Dopants in La1.92Sr0.08CuO4". United States. doi:10.1103/PhysRevLett.120.197001. https://www.osti.gov/servlets/purl/1461419.
@article{osti_1461419,
title = {Quantitative Characterization of the Nanoscale Local Lattice Strain Induced by Sr Dopants in La1.92Sr0.08CuO4},
author = {Lin, J. Q. and Liu, X. and Blackburn, E. and Wakimoto, S. and Ding, H. and Islam, Z. and Sinha, S. K.},
abstractNote = {Here, the nanometer scale lattice deformation brought about by the dopants in the high temperature superconducting cuprate La2-xSrxCuO4 (x = 0.08) was investigated by measuring the associated x-ray diffuse scattering around multiple Bragg peaks. A characteristic diffuse scattering pattern was observed, which can be well described by continuum elastic theory. With the fitted dipole force parameters, the acoustic-type lattice deformation pattern was reconstructed and found to be of similar size to lattice thermal vibration at 7 K. Our results address the long-term concern of dopant introduced local lattice inhomogeneity, and show that the associated nanometer scale lattice deformation is marginal and cannot, alone, be responsible for the patched variation in the spectral gaps observed with scanning tunneling microscopy in the cuprates.},
doi = {10.1103/PhysRevLett.120.197001},
journal = {Physical Review Letters},
number = 19,
volume = 120,
place = {United States},
year = {2018},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Figures / Tables:

FIG. 1 FIG. 1: Diffuse scattering pattern around (0 0 22) and (2 0 22) Bragg peaks. (a)–(c) Experimental data in the H-L (K = 0) and K-L (H = 0) planes: (a),(b) are around (0 0 22) and (c) is around (2 0 22). Diagonal dashed lines are along the ridgesmore » of HDS. (d)– (f) Calculated diffuse scattering pattern with both HDS and TDS contributions. The parameters to generate HDS are from our fitting results. Data were taken at ∼7 K.« less

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.